Surgical retrieval apparatus

ABSTRACT

A surgical retrieval apparatus for receipt of multiple tissue specimens includes a collection bag, a support ring, and a flip ring. The collection bag includes first and second packets each having an outer portion and an inner portion. The first and second packets define first and second adjacent chambers, respectively, that are each configured for receipt of a tissue specimen therein. The first and second packets are coupled to both the support ring and the flip ring. The flip ring is pivotably coupled to the support ring and is rotatable relative to the support ring between a first position, wherein the first chamber is accessible for depositing a tissue specimen therein and a second position, wherein the second chamber is accessible for depositing a tissue specimen therein.

CROSS-REFERENCE TO RELATED APPLICATIONS

This application claims the benefit of, and priority to, U.S.Provisional Patent Application No. 61/562,097, filed on Nov. 21, 2011,the entire contents of which are incorporated by reference herein.

BACKGROUND

1. Technical Field

The present disclosure relates to a retrieval apparatus, and moreparticularly, to surgical retrieval apparatus for removing tissuespecimens from an internal body cavity.

2. Background of Related Art

In minimally-invasive surgical procedures, operations are carried outwithin the body by elongated instruments inserted through small entranceopenings in the body. The entrance openings in the body tissue thatallow passage of instruments to the interior of the body may be naturalpassageways of the body, may be created by a tissue piercing instrument,e.g., a trocar, or may be created by a small incision into which acannula is inserted.

Because the tubes, instrumentation, and any required punctures orincisions are relatively small, minimally-invasive surgery is lessinvasive as compared to conventional open surgical procedures in whichthe surgeon is required to cut open large areas of body tissue.Therefore, minimally-invasive surgery minimizes trauma to the patientand reduces patient recovery time and hospital costs.

Minimally-invasive procedures may be used for partial or total removalof body tissue or organs from the interior of the body, e.g.nephrectomy, cholecystectomy, lobectomy, and other procedures includingthoracic, laparoscopic, and endoscopic procedures. During suchprocedures, it is common that a cyst, tumor, or other affected tissue ororgan needs to be removed via the access opening in the skin, or througha cannula. Various types of entrapment devices have been disclosed tofacilitate this procedure. In many procedures where cancerous tumors areremoved, removal of the specimen in an enclosed environment is highlydesirable to inhibit seeding of cancer cells.

In minimally-invasive thoracic surgery, for example, access to thethoracic cavity as well as maneuverability within the thoracic cavity islimited since the access port is typically positioned within theconfined space between a patient's ribs. Such procedures, commonlyreferred to as video assisted thorascopic surgery (VATS), aim to reducepatient recovery time by accessing the thoracic cavity through thenatural intercostal space without spreading the ribs as in openprocedures. This restricted access can sometimes cause problems whenremoving large specimens. Moreover, in such procedures, e.g. thorascopicwedge resection and lobectomy, it is often necessary to remove a portionof the lung and retrieve it relatively intact for pathology. It is alsoimportant that the specimen be sufficiently contained to inhibit seedingof cancer cells during manipulation and removal.

In designing a surgical retrieval apparatus, a balance must be struckbetween the need to provide a retrieval apparatus with a strong enoughcontainment bag to prevent tearing or rupture while providing sufficientrigidity to enable manipulation and removal. Another balance which needsto be achieved is to provide sufficient maneuverability while reducingtissue trauma, e.g. damaging lung tissue, during manipulation andremoval. Additionally, the instrumentation should be designed tominimize the risk of seeding and be able to be inserted through a smallaccess incision or port while also being capable of accommodating a widerange of patient sizes and specimen sizes.

SUMMARY

In accordance with the present disclosure, a surgical retrievalapparatus for receipt of multiple tissue specimens is provided. Thesurgical retrieval apparatus generally includes a collection bag, asupport ring, and a flip ring. The collection bag includes first andsecond packets each having an outer portion and an inner portion. Thefirst and second packets define first and second adjacent chambers thatare each configured for receipt of a tissue specimen therein. The firstand second packets are coupled to both the support ring and the flipring. The flip ring is pivotably coupled to the support ring and isrotatable relative to the support ring between a first position, whereinthe first chamber is accessible for depositing a tissue specimentherein, and a second position, wherein the second chamber is accessiblefor depositing a tissue specimen therein.

In embodiments, when the first chamber is accessible the second chamberis closed, and when the second chamber is accessible the first chamberis closed.

In embodiments, the outer portions of the first and second packets areengaged to the support ring. Additionally or alternatively, the innerportions of the first and second packets may be engaged to the flipring.

The surgical retrieval apparatus, in embodiments, further includes anelongated tubular member and a rod rotatably disposed within theelongated tubular member. The elongated tubular member is coupled to thesupport ring and the rod is coupled to the flip ring such that rotationof the rod relative to the elongated tubular member rotates the flipring between the first and second positions. A rotation knob may becoupled to the rod to effect corresponding rotation of the rod.

In embodiments, the collection bag is articulatable relative to thelongitudinal axis of the elongated member. An articulation knob may beprovided that is selectively movable to articulate the collection bag.

In embodiments, the inner portions of the first and second packets areattached to one another.

First and second sutures may be provided to extend between the first andsecond packets to facilitate cinching the first and second packetsclosed.

In embodiments, the support ring defines a generally circularconfiguration and/or the flip ring defines a generally semi-circularconfiguration.

In accordance with the present disclosure, another surgical retrievalapparatus is provided including a handle portion, an elongated tubularmember, a collection bag, and a flip ring. The collection bag ispositioned distal of the elongated tubular member and includes first andsecond packets. The first packet defines a first chamber with a firstopening and the second packet defines a second chamber with a secondopening. The flip ring is operably coupled to the collection bag and ismovable between first and second positions to alternatingly expose thefirst and second openings of the first and second chambers,respectively.

In embodiments, a first suture is positioned about an open end of thefirst packet to cinch the first packet closed to retain a first specimenof tissue therein and/or a second suture is positioned about an open endof the second packet to cinch the second packet closed to retain asecond specimen of tissue therein.

In embodiments, one or both of the first and second packets isreleasable from the flip ring.

In embodiments, the flip ring is rotated via rotation of a rotation knobto alternatingly expose the first and second openings of the respectivefirst and second chambers.

In accordance with the present disclosure, a method of manufacturing amulti-chamber collection bag for use in a surgical retrieval apparatusis provided. The method includes providing a sleeve of material havingfirst and second open ends; forming a divider between the first andsecond open ends to divide the sleeve into first and second packets,each defining a chamber and having a closed end adjacent the divider andan open end; and attaching the packets to one another such that thechambers are positioned adjacent one another.

In embodiments, the divider is an RF weld formed in the sleeve.

The divider may be centrally formed between the first and second openends such that the first and second chambers are substantially equal insize. Alternatively, the divider may be formed closer to one of thefirst and second open ends such that the first and second chambersdefine different sizes.

In embodiments, the method further includes coupling the first andsecond packets to a support ring. The method may additionally includecoupling the first and second packets to a flip ring that is pivotablycoupled to the support ring such that the flip ring may be rotatedrelative to the support ring to alternatingly provide access to thefirst and second chambers.

BRIEF DESCRIPTION OF THE DRAWINGS

Various embodiments of the subject surgical retrieval apparatus aredescribed herein with reference to the drawings wherein:

FIG. 1 is a perspective view of one embodiment of a surgical retrievalapparatus provided in accordance with the present disclosure;

FIG. 2 is a perspective, cut-away view of a handle portion of thesurgical retrieval apparatus of FIG. 1;

FIG. 3 is a perspective view of the area of detail indicated in FIG. 1,shown with parts separated;

FIG. 4 is an enlarged, perspective, cut-away view of the area of detailindicated in FIG. 1;

FIG. 5 is a perspective view of a multi-chamber collection bagconfigured for use with the surgical retrieval apparatus of FIG. 1,shown in an unfolded condition;

FIG. 6 is a perspective view of the multi-chamber collection bag of FIG.5 being folded during assembly;

FIG. 7 is a perspective view of the surgical retrieval apparatus of FIG.1 incorporating the multi-chamber collection bag of FIG. 5, duringinitial insertion of a tissue specimen;

FIG. 8 is a perspective view of the surgical retrieval apparatus of FIG.7 illustrating switching openings of the multi-chamber collection bag;

FIG. 9 is a perspective view of the surgical retrieval apparatus of FIG.7 illustrating insertion of a second tissue specimen into a secondchamber of the multi-chamber collection bag;

FIG. 10 is a perspective view of the surgical retrieval apparatus ofFIG. 7 illustrating the positioning of sutures about the chambers of themulti-chamber collection bag; and

FIG. 11 is a perspective view of the multi-chamber collection bagillustrating the chambers cinched closed about the tissue specimens andthe multi-chamber collection bag severed from the specimen retrievaldevice.

DETAILED DESCRIPTION

Various embodiments of the presently disclosed surgical retrievalapparatus, and methods of making and using the same, will now bedescribed in detail with reference to the drawings wherein likereferences numerals identify similar or identical elements. In thedrawings, and in the following description, the term “proximal” shouldbe understood as referring to the end of the apparatus, or componentthereof, that is closer to the clinician during proper use, while theterm “distal” should be understood as referring to the end that isfarther from the clinician, as is traditional and conventional in theart.

Referring initially to FIG. 1, one embodiment of a surgical retrievalapparatus is shown generally including a specimen retrieval device 330and a handpiece 12. Specimen retrieval device 330 generally includes anend effector assembly 333 having a multi-chamber collection bag 300coupled thereto. End effector assembly 333 defines a generally acircular support ring 334 engaged to and extending from a distal end 336of elongate tubular member 332 (although end effector assembly 333 mayalternatively be deployable from elongated tubular member 332), and asemi-circular flip ring 338 (FIGS. 7-9) pivotably coupled to circularsupport ring 334. As will be described in greater detail below, endeffector assembly 333 is configured to retain multi-chamber collectionbag 300 thereon and to selectively provide access to first chamber 318and second chamber 322 (FIG. 9) of first and second packets 316, 320,respectively, of collection bag 300, depending on the position of flipring 338 (FIGS. 7-9) relative to circular support ring 334.

The handpiece 12 of the surgical retrieval apparatus, as shown in FIGS.1 and 2, generally includes a handle portion 36 and an elongate tubularmember 38 extending distally from handle portion 36. Specimen retrievaldevice 330 is connected to an articulating portion 40 of handpiece 12that extends from a distal end 42 of elongate tubular member 38.Articulating portion 40 is provided to allow specimen retrieval device330 to initially lie substantially parallel to elongate tubular member38 for ease of insertion and removal through an access port in tissue(not shown). Articulating portion 40 is articulatable from this initialposition to an articulated position to move the specimen retrievaldevice 330 to angular positions with respect to the longitudinal axis ofthe elongate tubular member 38 to facilitate receipt of a tissuespecimen (or tissue specimens) within collection bag 300.

Handle portion 36 of handpiece 12 includes a housing 44 having housinghalves 44 a and 44 b. A proximal end 46 of elongate tubular member 38 isaffixed to housing halves 44 a and 44 b and extends through a distalopening 48 in housing 44. As best shown in FIG. 2, handpiece 12 includesa central rod 50 which extends through housing 44 and through elongatetubular member 38 and into housing 44. Central rod 50 is selectivelytranslatable to move articulating portion(s) 40 to the articulatedposition, and is also selectively rotatable to rotate flip ring 338(FIGS. 7-9) to provide access to either first chamber 318 of firstpacket 316 or second chamber 322 of second packet 320 (see FIGS. 5-11)of collection bag 300. Proximal end 54 of central rod 50 extendsproximally through housing 44, ultimately engaging an articulation knob52. Articulation knob 52 is selectively translatable relative to housing44 to translate central rod 50 longitudinally within elongate tubularmember 38 in order to articulate specimen retrieval device 330 relativeto elongate tubular member 38, as will be described in greater detailhereinbelow.

With continued reference to FIGS. 1 and 2, a rotation knob 56 isprovided to permit selective rotation of central rod 50 of specimenretrieval device 330. Rotation knob 56 is rotatably mounted withinhousing 44 and is mounted about a keyed section 58 of central rod 50.Keyed section 58 extends through a keyway 60 in rotation knob 56 whichallows central rod 50 to move longitudinally through rotation knob 56 toactuate articulating portion 40 while at the same time being rotatableby rotation knob 56 to correspondingly rotate central rod 50 of specimenretrieval device 330. In other words, although central rod 50 isselectively translatable relative to rotation knob 56, rotation knob 56is retained in engagement with central rod 50 via keyed section 58 suchthat rotation knob 56 may be rotated to rotate flip ring 338 (FIGS. 7-9)of end effector assembly 333.

Referring now to FIGS. 3 and 4, in conjunction with FIGS. 1 and 2,articulating portion 40 generally includes a flexible articulation tube62 and an articulation mechanism 64 positioned within flexiblearticulation tube 62. Flexible articulation tube 62 can be formed from avariety of flexible, biocompatible materials, such as, for examplepolymers, rubbers, silicones, etc. Articulation mechanism 64 is aU-joint type and generally includes a central member 68 and a firstclevis 70 affixed to a distal end 72 of central rod 50. Articulationmechanism 64 additionally includes a second clevis 74 affixed to aproximal end 343 of rotatable center rod 344 of specimen retrievaldevice 330. Central member 68 pivotably interconnects first clevis 70and second clevis 74 to permit articulation of specimen retrieval device330 relative to elongate tubular member 38 of handpiece 12. A proximalend 78 of flexible articulation tube 62 is affixed to distal end 42 ofelongate tubular member 38 and a distal end 80 of flexible articulationtube 62 is affixed to a proximal end 337 of elongate tubular member 332of specimen retrieval device 330. Articulation mechanism 64 isselectively translatable through elongate tubular member 38 and flexiblearticulation tube 62, e.g., via translation of articulation knob 52,between the unarticulated position, wherein articulation mechanism 64 isdisposed within elongated tubular member 38 such that articulation ofarticulation mechanism 64 is inhibited, and the articulated position,wherein articulation mechanism 64 is disposed within flexiblearticulation tube 62 such that articulation mechanism 64 is permitted toarticulate.

Initially, articulation mechanism 64 is disposed within elongate tubularmember 38 such that specimen retrieval device 330 is longitudinallyoriented relative to elongate tubular member 38 of handpiece 12. Inorder to articulate specimen retrieval device 330, central rod 50 istranslated distally, e.g., via distal translation of articulation knob52, through elongate tubular member 38 such that articulation mechanism64 is disposed within flexible articulation tube 62, thereby permittingsecond clevis 74 to pivot relative to first clevis 70 to articulate thespecimen retrieval device. It should be noted that while articulationmechanism 64 is disclosed as a U-joint mechanism other knownarticulation mechanisms of the type used in surgical instruments arecontemplated herein.

Referring now to FIGS. 5-11, and initially to FIG. 5, there is discloseda multi-chamber collection bag 300 for receipt of multiple tissuespecimens. Although multi-chamber collection bag 300 is shown as adual-chamber collection bag, it is envisioned that greater than twochambers may also be provided. Dual chamber collection bag 300 is formedfrom a sleeve of material 302 defining a hollow interior 304. Duringmanufacturing, as can be appreciated, a plurality of sleeves of material302 may be cut from a single elongated sleeve (not shown) of materialfor making multiple collection bags 300, thus obviating the need to formthe material for each bag separately. Alternatively, the bags can beformed of separate materials.

Sleeve of material 302 has a first open end 306 and a second open end308. In order to form multiple chambers within sleeve of material 302, acentral constriction or divider, e.g., a weld 310, is formedintermediate first open end 306 and second open end 308. Weld 310divides sleeve of material 302 to form a first packet 316 defining afirst chamber 318 for receipt of a first tissue specimen “TS1” (FIG. 7)and a second packet 320 having a second chamber 322 for receipt of asecond tissue specimen “TS2” (FIG. 9). Depending on a particularpurpose, packets 316, 320 may define similar or different sizes, e.g.,weld 310 may be formed closer to first open end 306, closer to secondopen end 308, or may be located centrally therebetween. Weld 310 isformed by using a radio frequency (RF) welding technique, or any othersuitable welding technique. Alternatively, the divider separating firstand second packets 316 and 320, respectively, may be formed by any othersuitable process, e.g., shrink wrapping sleeve of material 302, applyinginternal glue within sleeve of material 302, heat shrinking, etc.

With reference to FIG. 6, in order to prepare dual chamber collectionbag 300 for use in a specimen retrieval instrument, as will be describedin greater detail hereinbelow, first and second packets 316 and 320 arefolded together about central weld 310 such that respective first andsecond open ends 306, 308 are brought together in abutting relationship.Thereafter, first and second inner portions 324 and 326 are secured toone another utilizing known methods such as, for example, gluing,welding, etc. By securing first and second inner portions 324 and 326 toone another such that first and second packs 316, 320 share a commoninner wall, first and second packets 316 and 320 can alternately beopened and closed by moving the joined portions 324, 326 back and forth,e.g., between a position adjacent outer portion 323 of first packet 316(wherein first packet 316 is closed and second packet 320 is open) and aposition adjacent outer portion 325 of second packet 320 (wherein secondpacket 320 is closed and first packet 316 is open).

Referring now to FIGS. 7-11, in conjunction with FIGS. 1-2, once firstand second packets 316 and 320 of dual chamber collection bag 300 havebeen assembled, dual chamber collection bag 300 is then engaged tospecimen retrieval device 330. Specimen retrieval device 330 generallyincludes an elongate tubular member 332 having an end effector assembly333 disposed at distal end 336 thereof. Elongate tubular member 332 iscoupled to elongate tubular member 38 of handpiece 12 via flexiblearticulation tube 62 of articulation mechanism 64 to permit articulationof specimen retrieval device 330 relative to handpiece 12. End effectorassembly 333, as mentioned above, includes a circular support ring 334engaged to and extending from distal end 336 of elongate tubular member332, and a central flip ring 338 having a distal end 340 pivotallyengaged to circular support ring 334 and a proximal end 342 engaged torotatable center rod 344 of specimen retrieval device 330, which extendsthrough elongate tubular member 332, ultimately coupling to central rod50 of handpiece 12. Thus, rotation of central rod 50, e.g., via rotationof rotation knob 56, effects similar rotation of rotatable center rod344 within elongate tubular member 332 to pivot central flip ring 338within circular support ring 334 from a first position, wherein firstchamber 318 of first packet 316 of collection bag 300 is accessible fordepositing a tissue specimen therein, and a second position, whereinsecond chamber 322 of second packet 320 of collection bag 300 isaccessible for depositing a tissue specimen therein.

Dual-chamber collection bag 300 is attached to specimen retrieval device330 by attaching the outer portions 323, 325 of first and second openupper ends 306, 308 of first and second packets 316, 320, respectively,to circular support ring 334. The joined inner portions 324, 326 offirst and second open upper ends 306, 308 of first and second packets316, 320, respectively, are attached to flip ring 338. Thus, rotation offlip ring 338 within circular support ring 334 functions to alternatelyopen and close first and second packets 316 and 320. Upper ends 306, 308of first and second packets 316, 320, respectively, of collection bag300 may be attached to circular support ring 334 and flip ring 338 inany suitable fashion, e.g., upper ends 306, 308 of first and secondpackets 316, 320, respectively, may be looped about circular supportring 334 and flip ring 338.

In use, with continued reference to FIGS. 7-11, in conjunction withFIGS. 1-2, specimen retrieval device 330, including dual chambercollection bag 300, is inserted into the body cavity of a patient (notshown), is articulated into position, e.g., via translation ofarticulation knob 52 from the unarticulated position to the articulatedposition, and is prepared for receiving a tissue specimen by rotating orflipping flip ring 338, as shown in FIG. 7, to the first position, e.g.,via rotating rotation knob 56 in a first direction, such that firstchamber 318 of first packet 316 of collection bag 300 is accessible fordepositing a tissue specimen therein. A grasping instrument such as, forexample, grasper 118 having first and second movable jaws 120 and 122(or any other suitable grasping instrument), is used to grasp a firsttissue specimen “TS1” and deposit first tissue specimen “TS1” throughfirst open end 306 and into first chamber 318 of first packet 316.

Referring now to FIGS. 8-9, in conjunction with FIGS. 1-2, once firsttissue specimen “TS1” has been fully received within first packet 316,specimen retrieval device 330 is actuated, e.g., via rotation ofrotation knob 56 in a second, opposite direction, to rotate center rod344 such that flip ring 338 pivots across circular support ring 334 fromthe first position to the second position, as shown in FIGS. 8-9, suchthat second chamber 322 of second packet 320 of collection bag 300 isaccessible for depositing a tissue specimen therein. More specifically,the rotation of flip ring 338 from the first position to the secondposition draws the inner portions 324, 326 of first and second packets316, 320, respectively, across circular support ring 334 to therebyclose first open end 306 of first packet 316 and open second open end308 of second packet 320.

With reference to FIG. 9, a grasper 118 (or other suitable instrument)is utilized to grasp a second tissue specimen “TS2” between jaws 120 and122 and deposit the tissue specimen “TS2” through second open end 308and into second chamber 322 of second packet 320. After first and secondtissue specimen “TS1” and “TS2” have been deposited into collection bag300, specimen retrieval device 330 may be used to withdraw collectionbag 300 out of the body cavity of a patient.

Referring now to FIGS. 10-11, alternatively, or additionally, a pair offirst and second sutures 346 and 348 may be inserted through a gap 350defined between folded first and second packets 316 and 320 to tie offfirst and second packets 316 and 320 prior to removal from the bodycavity. Specifically, first and second ends 352 and 354 of first suture346 are wrapped around first packet 316 and first and second ends 356and 358 of second suture 348 are wrapped around second packet 320. Firstand second ends 352 and 354 of first suture 346 are tied together toform a first cinch 360 and first and second ends 356 and 358 of secondsuture 348 are tied together to form a second cinch 362 about secondpacket 320.

Referring now specifically to FIG. 11, after first and second cinches360 and 362 have been formed to tie off first and second packets 316 and320, a first upper end 364 of first packet 316 and a second upper end366 of second packet 320 are severed or cut apart from a remaining orremnant amount of material 368 of sleeve of material 302 that remainsaffixed to outer support ring 334 and flip ring 338 of specimenretrieval device 330. This forms a double packet bag 370, securelycontaining first and second tissue specimens “TS1” and “TS2” withinfirst and second respective packets 316 and 320, for ease of removalthrough a surgical access port or other opening. In this manner,collection bag 300, in conjunction with specimen retrieval device 330,provides a safe and secure method of simultaneously removing multipletissue sections from within a body cavity.

From the foregoing and with reference to the various figure drawings,those skilled in the art will appreciate that certain modifications canalso be made to the present disclosure without departing from the scopeof the same. While several embodiments of the disclosure have been shownin the drawings, it is not intended that the disclosure be limitedthereto, as it is intended that the disclosure be as broad in scope asthe art will allow and that the specification be read likewise.Therefore, the above description should not be construed as limiting,but merely as exemplifications of particular embodiments. Those skilledin the art will envision other modifications within the scope and spiritof the claims appended hereto.

What is claimed is:
 1. A surgical retrieval apparatus for receipt ofmultiple tissue specimens, the surgical retrieval apparatus comprising:a collection bag including first and second packets, each packet havingan outer portion and an inner portion, the first and second packetsdefining first and second adjacent chambers, each chamber configured forreceipt of a tissue specimen therein; a support ring, the first andsecond packets coupled to the support ring; a flip ring pivotablycoupled to the support ring, the first and second packets coupled to theflip ring, the flip ring rotatable relative to the support ring betweena first position, wherein the first chamber is accessible for depositinga tissue specimen therein, and a second position, wherein the secondchamber is accessible for depositing a tissue specimen therein; anelongated tubular member coupled to the support ring; and a rodextending through the elongated tubular member, the rod coupled to theflip ring and configured to rotate the flip ring between the first andsecond positions.
 2. The surgical retrieval apparatus according to claim1, wherein when the first chamber is accessible the second chamber isclosed, and when the second chamber is accessible the first chamber isclosed.
 3. The surgical retrieval apparatus according to claim 1,wherein the outer portions of the first and second packets are coupledto the support ring.
 4. The surgical retrieval apparatus according toclaim 1, wherein the inner portions of the first and second packets arecoupled to the flip ring.
 5. The surgical retrieval apparatus accordingto claim 1, wherein the rod is rotatably disposed within the elongatedtubular member, and wherein rotation of the rod relative to theelongated tubular member rotates the flip ring between the first andsecond positions.
 6. The surgical retrieval apparatus according to claim5, further comprising a rotation knob coupled to the flip ring, therotation knob selectively rotatable to effect corresponding rotation ofthe rod to rotate the flip ring between the first and second positions.7. The surgical retrieval apparatus according to claim 1, wherein theelongated tubular member defines a longitudinal axis and wherein thecollection bag is articulatable relative to the longitudinal axis. 8.The surgical retrieval apparatus according to claim 7, furthercomprising an articulation knob, the articulation knob selectivelymovable to articulate the collection bag.
 9. The surgical retrievalapparatus according to claim 1, wherein the inner portions of the firstand second packets are attached to one another.
 10. The surgicalretrieval apparatus according to claim 1, further comprising first andsecond sutures extending between the first and second packets, thesutures configured to facilitate cinching the first and second packetsclosed.
 11. The surgical retrieval apparatus according to claim 1,wherein the support ring defines a generally circular configuration andthe flip ring defines a generally semi-circular configuration.
 12. Asurgical retrieval apparatus, comprising: a handle portion; an elongatedtubular member; a collection bag positioned distal of the elongatedtubular member and including first and second packets, the first packetdefining a first chamber with a first opening and the second packetdefining a second chamber with a second opening; a flip ring operablycoupled to the collection bag to and movable between first and secondpositions to alternatingly expose the first and second openings of thefirst and second packets, respectively; and a rod extending through theelongated tubular member, the rod coupled to the flip ring andconfigured to move the flip ring between the first and second positions.13. The surgical retrieval apparatus according to claim 12, furthercomprising a first suture positioned about an open end of the firstpacket to cinch the first packet closed to retain a first specimen oftissue therein.
 14. The surgical retrieval apparatus according to claim13, further comprising a second suture positioned about an open end ofthe second packet to cinch the second packet closed to retain a secondspecimen of tissue therein.
 15. The surgical retrieval apparatusaccording to claim 12, wherein the first and second packets arereleasable from the flip ring.
 16. The surgical retrieval apparatusaccording to claim 12, further comprising a rotation knob, wherein theflip ring is rotated via rotation of a rotation knob to alternatinglyexpose the first and second openings.